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Mark.Smith

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  1. Hi, For a class assignment we have to line our scripts before we film. I'm a bit confused how to line my script though because its being done TV style with 3 locked off cameras. 1 master shot, 1 medium shot on character 1 and 1 medium close up on character 2. Lining out the master shot is clear but how do I line out the other shots? It seems like I would end up with lots of little redundant lines over all my pages. Thanks for your input.
  2. Hi, I am about to do some colour grading and have come across the new ProRes 4:4:4:4, but I'm reading a lot of people are saying only use 4:4:4:4 if your going to use the Alpha channel. My understanding for the Alpha channel is that it has nothing to do with colour grading, more for compositing etc. Any input would be appreciated
  3. Just to add to my question (I should have maybe posted this in student section), I downloaded pCAM, an iPhone/iPod touch tool for DP's first AC's etc does amongst many other things Focal length Conversions. So you get the exact vertical/horizontal match of focal length. My question is when I try to convert: 8mm (on s16mm 1.78) to s35mm (3+4 perf - 1.78) it says it would be a 15.7mm, closest even focal length being a 16mm lens. However same focal lengths but this time using the aspect ratio of 1.85 it says s16mm to s35mm would be 16.3mm lens, practically that would still mean a 16mm, but I would for technical purposes like understand what is going on here? Can anyone explain this relationship? Perhaps explaining vertical/horizontal match would clear things up more efficiently. Attached is a picture of the conversion calculator.
  4. Hello, Is anyone aware of a (printable) chart that shows what a s16mm lens would equate to in 35mm? Or what the factor to multiply it by is? Thanks
  5. Hello, Today at at the cam shop I was looking through various dir viewfinders. I came across the Mark Vb Director Viewfinder and looked though it at an aspect ratio chart. One thing I noticed is that when I cycled through the different aspect ratios the frame height would move but the length of the frame stayed the same. I know there was nothing wrong with the viewfinder but I'm trying to get my head around what im looking through. I would have assumed that if I was on the 4x3 aspect ratio and I moved it to the say cinemascope aspect ratio the field of view would increase without having to select a wider focal length. What I also assumed would happen was the dir viewfinder would take the exact shape of what the final image would project as. As I looked thought it today 16mm or 35 it had the same framing, just the ''height'' of the frame changed. Where am I confusing myself?
  6. Hello, I am about to shoot a 10 min film on color neg. It will be my first official short as a DP. I'm starting to prepare a estimate for the producer but I'm getting mixed answers when trying to figure out exactly how many feet I'll need. It's budget is low so I would imagine that numerous takes are out of the question. Is there a rough estimate when shooting a drama? I.e Or am I asking too broad of a question? Or perhaps there's a rough guide line all DP's follow on dramas such as ''for every minute of screen time = xxx amount of spool time''. thanks
  7. Great information. Thanks very much for the background on focal lengths relations to film size. Things are clearing up ! The Panavision calculator is superb! Where would I find a good directors viewfinder to get started with? To David, My name is already taken (Mark Smith). It doesn't allow for any other characters then A-Z otherwise I would try to make a variation. Any suggestions? Mark
  8. Hello, Student question. First year film student. I would like to know what focal length formula is used to convert full frame SLR lenses to s16mm,16mm, 35mm etc. Or perhaps a better question would be to be to explain why they are not the same. i.e why is the field of view not the same on my full frame SLR as it is on a Arri 35mm? Are they not both full frame? Im just going over the fundementals and trygin to grasp what the different focal lengths equate to. When someone says 8mm in SLR world that means ultra wide. When I put the 8mm lens on a Arri SR1 at the school, well it wasn't as wide as I'd assumed it would be. It was closer to a 50mm in SLR terms. I searched but could not find any specific info. grateful for any info
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